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#nullable enable
#pragma warning disable CS1591
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.MediaEncoding;
using MediaBrowser.Controller.Providers;
using MediaBrowser.Model.Drawing;
using MediaBrowser.Model.Dto;
using MediaBrowser.Model.Entities;
using MediaBrowser.Model.MediaInfo;
using Microsoft.Extensions.Logging;
namespace MediaBrowser.Providers.MediaInfo
{
/// <summary>
/// Uses ffmpeg to extract embedded images.
/// </summary>
public class EmbeddedImageProvider : IDynamicImageProvider, IHasOrder
{
private readonly IMediaEncoder _mediaEncoder;
private readonly ILogger<EmbeddedImageProvider> _logger;
public EmbeddedImageProvider(IMediaEncoder mediaEncoder, ILogger<EmbeddedImageProvider> logger)
{
_mediaEncoder = mediaEncoder;
_logger = logger;
}
/// <inheritdoc />
public string Name => "Embedded Image Extractor";
/// <inheritdoc />
// Default to after internet image providers but before Screen Grabber
public int Order => 99;
/// <inheritdoc />
public IEnumerable<ImageType> GetSupportedImages(BaseItem item)
{
return new[] { ImageType.Primary };
}
/// <inheritdoc />
public Task<DynamicImageResponse> GetImage(BaseItem item, ImageType type, CancellationToken cancellationToken)
{
var video = (Video)item;
// No support for these
if (video.IsPlaceHolder || video.VideoType == VideoType.Dvd)
{
return Task.FromResult(new DynamicImageResponse { HasImage = false });
}
// Can't extract if we didn't find any video streams in the file
if (!video.DefaultVideoStreamIndex.HasValue)
{
_logger.LogInformation("Skipping image extraction due to missing DefaultVideoStreamIndex for {Path}.", video.Path ?? string.Empty);
return Task.FromResult(new DynamicImageResponse { HasImage = false });
}
return GetEmbeddedImage(video, cancellationToken);
}
private async Task<DynamicImageResponse> GetEmbeddedImage(Video item, CancellationToken cancellationToken)
{
MediaSourceInfo mediaSource = new MediaSourceInfo
{
VideoType = item.VideoType,
IsoType = item.IsoType,
Protocol = item.PathProtocol ?? MediaProtocol.File,
};
var imageStreams =
item.GetMediaStreams()
.Where(i => i.Type == MediaStreamType.EmbeddedImage)
.ToList();
string extractedImagePath;
if (imageStreams.Count == 0)
{
// Can't extract if we don't have any EmbeddedImage streams
return new DynamicImageResponse { HasImage = false };
}
else
{
var imageStream = imageStreams.Find(i => (i.Comment ?? string.Empty).Contains("front", StringComparison.OrdinalIgnoreCase))
?? imageStreams.Find(i => (i.Comment ?? string.Empty).Contains("cover", StringComparison.OrdinalIgnoreCase))
?? imageStreams[0];
extractedImagePath = await _mediaEncoder.ExtractVideoImage(item.Path, item.Container, mediaSource, imageStream, imageStream.Index, cancellationToken).ConfigureAwait(false);
}
return new DynamicImageResponse
{
Format = ImageFormat.Jpg,
HasImage = true,
Path = extractedImagePath,
Protocol = MediaProtocol.File
};
}
/// <inheritdoc />
public bool Supports(BaseItem item)
{
if (item.IsShortcut)
{
return false;
}
if (!item.IsFileProtocol)
{
return false;
}
return item is Video video && !video.IsPlaceHolder && video.IsCompleteMedia;
}
}
}
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